Climate of Keystone
Keystone has a semi-arid climate. It hardly rains here. The average annual temperature for Keystone is 13° degrees and there is about 460 mm of rain in a year. It is dry for 164 days a year with an average humidity of 65% and an UV-index of 3.
Climate averages for the whole year
- Day: the average daily temperature during the day is between -1°C and 28°C
- Night:the average nighttime temperature is between -9°C and 16°C
- Rain: it rains 131 days and there is a total of approximately 461 mm rainfall
- Snow: it snows an average of 73 days per year
- Sun hours: throughout the year there are 3247 sun hours
Maximum temperature: | between -1°C and 28°C |
Warmest month: | 28°C in July |
Coldest month: | -1°C in January |
Night temperature: | between -9°C and 16°C |
Dry days: | 161 days |
Days with rain: | 131 days |
Days with snow: | 73 days |
Total rain sum: | 461 mm |
Hours of sunshine: | 3247 hours |
Do you want to go to Keystone?
These are the travel companies where you can book a trip to Keystone:
Temperature graph
This graph shows the average maximum temperature (red) and minimum temperature (blue) for Keystone.
Precipitation graph
This graph shows the average amount of rainfall per month for Keystone.
Climate table of Keystone
In this climate table you can see at a glance what the average weather per month is for Keystone. The data has been collected over a 30-year period, from which an average per month has been derived. From year to year the differences may be larger or smaller, but with this climate table you have a good idea of what the weather for Keystone might be like in a given month.
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Day temp. (°C) | -1 | 0 | 7 | 11 | 17 | 24 | 28 | 27 | 22 | 13 | 6 | -1 |
Night temp. (°C) | -9 | -9 | -3 | 1 | 6 | 12 | 16 | 15 | 11 | 3 | -3 | -9 |
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
Precipitation (mm) | 13 | 19 | 30 | 56 | 67 | 72 | 61 | 59 | 26 | 27 | 13 | 18 |
Days with rain | 6 | 6 | 9 | 13 | 18 | 17 | 16 | 16 | 10 | 9 | 4 | 7 |
Days with snow | 12 | 13 | 11 | 9 | 2 | - | - | - | - | 5 | 9 | 12 |
Dry days | 13 | 9 | 11 | 8 | 11 | 13 | 15 | 15 | 20 | 17 | 17 | 12 |
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
Sun hours per day | 6 | 6 | 8 | 10 | 11 | 12 | 12 | 12 | 11 | 7 | 7 | 6 |
Wind force (Bft) | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
UV-index | 2 | 2 | 2 | 2 | 4 | 5 | 6 | 5 | 4 | 3 | 2 | 2 |
Best time to visit Keystone
The best time to visit Keystone in the state of South Dakota is from June through September. In this period you have a warm temperature and little precipitation. The highest average temperature in Keystone is 28°C in July and the lowest is -1°C in January.
Climate of Keystone by month
What is the average climate in a given month for Keystone? Click on a month to see all monthly averages for sunshine, maximum and minimum temperatures, percent chance of rain per day, snowfall and number of rainy days.
Keystone weather experiences
Have you been to in Keystone?
Leave your Keystone weather experience for a chance to win $150!